Unlocks the Trebuchet in the Siege Workshop.

Upgrade Table

Internal clipboard Please note
The research times listed below assume no research bonuses are active, such as those from technologies, alliance technologies, or VIP perks. While we cannot predict your research time, it will likely be less.
Level Requirements Costs Time Power
1 Medical Corps Level 10
Heavy Frame Level 10
Academy Level 25
Resource icon food 10.0M
Resource icon wood 10.0M
Resource icon stone 7.5M
Resource icon gold 10.0M
150d 1h 30min 672,382

Upgrade Rewards

Advanced Research — Research Trebuchet in the Academy (edit)
Level Reward
Resource icon food Food Resource icon wood Wood Resource icon stone Stone Resource icon gold Gold
1  ?  ?  ?  ?
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